CN210699200U

CN210699200U - Novel filter felt

Info

Publication number: CN210699200U
Application number: CN201921197330.9U
Authority: CN
Inventors: 张菲菲
Original assignee: Zhejiang Dongda Filter Material Technology Co Ltd
Current assignee: Zhejiang Dongda Filter Material Technology Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-09
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a novel filter felt relates to filter felt technical field, and its technical scheme main points are: the fabric comprises a high-temperature-resistant layer, an adsorption layer and a basal layer in sequence, wherein the high-temperature-resistant layer is made of melamine fibers, the adsorption layer is made of activated carbon cloth, and the basal layer is formed by three-dimensional needling of polyimide fibers. The melamine fiber has good heat resistance and corrosion resistance, is beneficial to maintaining the structural stability of the high-temperature-resistant layer, has small diameter and high dust capture rate, and realizes the filtration of dust; the adsorption layer utilizes the active carbon particles uniformly distributed in the active carbon cloth to adsorb toxic and harmful substances in the flowing air; the air filtered by the high temperature resistant layer and the adsorption layer is finally filtered by the substrate layer, so that the filtering effect is improved.

Description

Novel filter felt

Technical Field

The utility model relates to a filter felt technical field, in particular to novel filter felt.

Background

Based on increasingly severe domestic air quality environment, the treatment of air pollution in China is increasingly strong, wherein factory smoke emission is one of main sources of air pollution, and the control of the factory smoke emission becomes one of the important tasks of slowing down air quality pressure at present. In the factory flue gas emission control, the bag type dust removal technology is mainly used at present, the main effective component of the filter bag is the needled filter felt used by the filter bag, and the used filter felt is required to have high temperature resistance and corrosion resistance because the flue gas output from the occasions generally has the characteristics of high temperature, strong corrosivity and the like.

Chinese patent with publication number CN207954890U discloses a hot-melt non-woven needle felt, which comprises a hot-melt chemical fiber non-woven fabric layer, wherein glass fiber layers are arranged on two sides of the hot-melt chemical fiber non-woven fabric layer, a polytetrafluoroethylene layer is arranged on one side of the glass fiber layer, a filtering hole is arranged on the glass fiber layer, and the angle formed by the filtering hole and the horizontal plane is 45 degrees.

Through setting up the polytetrafluoroethylene layer in the above-mentioned patent, make whole hot melt non-woven fabrics acupuncture felt have good chemical corrosion resistance, through setting up hot melt chemical fibre non-woven fabrics layer and glass fiber layer, improve the melting point of whole acupuncture felt, thereby satisfy the requirement of filtering high temperature flue gas, but these high temperature flue gases of discharging often still contain the material serious to environmental pollution in the mill, in the fine particles thing in filtering the flue gas, do not detach the poisonous and harmful substance in the smoke and dust, still will produce harm to the atmosphere.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a novel filter felt, it has the advantage that can effectively absorb harmful substance in the high temperature gas.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a novel filter felt, includes high temperature resistant layer, adsorbed layer and stratum basale in proper order, high temperature resistant layer is made for melamine fibre, the adsorbed layer is made for activated carbon cloth, the stratum basale is that polyimide fiber forms through three-dimensional acupuncture.

Through the technical scheme, the melamine fiber has good heat resistance and corrosion resistance, the stability of the structure of the high-temperature-resistant layer is kept, the diameter of the melamine fiber is small, the dust capture rate is high, and the dust is filtered; the adsorption layer utilizes the active carbon particles uniformly distributed in the active carbon cloth to adsorb toxic and harmful substances in the flowing air; the air filtered by the high temperature resistant layer and the adsorption layer is finally filtered by the substrate layer, so that the filtering effect is improved.

Preferably, the dust collecting device further comprises a dust facing layer, the dust facing layer is located on one side, away from the adsorption layer, of the high temperature resistant layer, and the dust facing layer is a polytetrafluoroethylene layer.

Through above-mentioned technical scheme, because polytetrafluoroethylene has hydrophobic performance, meet the dirt layer and can see through the air and intercept moisture outside, reduce subsequent high temperature resistant layer and adsorbed layer and appear influencing the condition of filter effect because of absorbing water.

Preferably, an adhesion layer is arranged between the dust facing layer and the high temperature resistant layer.

Through above-mentioned technical scheme, strengthen the joint strength who meets between dirt layer and the high temperature resistant layer, reduce to meet under high temperature environment and take place to drop between dirt layer and the high temperature resistant layer.

Preferably, the adhesion layer is a phenolic resin glue layer.

Through above-mentioned technical scheme, phenolic resin has high temperature resistance ability, is difficult for influencing the effect of adhesion under high temperature environment, can improve overall structure's stability.

Preferably, an anti-static layer is arranged between the dust facing layer and the high temperature resistant layer.

Through above-mentioned technical scheme, reduce and meet the dust layer and produce the content of static with the high temperature resistant layer under the condition of dust contact for a long time, avoid static and dust reaction to take place the detonation, improve the safety in utilization.

Preferably, be equipped with a plurality of adjacent equidistance first recesses that distribute on the side of meeting the dust layer towards high temperature resistant layer, be equipped with a plurality of adjacent equidistance second recesses that distribute on the side of meeting the dust layer towards high temperature resistant layer, the antistatic backing is filled in first recess and second recess.

By adopting the technical scheme, the contact area between the anti-static layer and the dust facing layer and between the anti-static layer and the high temperature resistant layer is increased, and the removal effect of the anti-static layer on static electricity generated in the dust facing layer and the high temperature resistant layer is improved; and the possibility of dislocation and offset between the anti-static layer and the dust-facing layer or the high-temperature resistant layer is reduced.

Preferably, the antistatic layer is formed by interweaving polyester yarns and conductive yarns.

Through the technical scheme, the polyester yarn has good elasticity, heat resistance and chemical resistance, and the antistatic layer has longer service life by combining the conductive capability of the conductive yarn, so that the antistatic requirement of the whole filter felt is met.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. by arranging the dust facing layer and the high temperature resistant layer, most dust in the smoke is filtered, and the influence of the dust on the layer structure of the subsequent filter felt is reduced;

2. the adsorption layer is arranged to adsorb toxic and harmful substances in the flue gas, so that the emission of harmful substances is reduced, and the environment is protected;

3. through setting up the adhesion layer, strengthen the overall structure intensity of filter felt.

Drawings

Fig. 1 is a schematic overall structure diagram of the embodiment.

Reference numerals: 1. a high temperature resistant layer; 11. a second groove; 2. a dust-facing layer; 21. a first groove; 3. an adsorption layer; 4. a base layer; 5. an adhesion layer; 6. and an antistatic layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a novel filter felt, as shown in figure 1, is equipped with adhesion layer 5 including meeting dust layer 2, high temperature resistant layer 1, adsorbed layer 3 and the stratum basale 4 that sets gradually between meeting dust layer 2 and the high temperature resistant layer 1, and adhesion layer 5 has two-layerly, is equipped with antistatic backing 6 between two-layer adhesion layer 5. When the filter felt is used, the dust layer 2 and the high-temperature resistant layer 1 face to one side of high-temperature smoke, the dust layer 2 and the high-temperature resistant layer 1 filter dust in the high-temperature smoke, the adsorption layer 3 adsorbs toxic and harmful substances in the high-temperature smoke, and the substrate layer 4 carries out final filtration on the high-temperature smoke.

The dust facing layer 2 is formed by interweaving polytetrafluoroethylene fibers, a plurality of first grooves 21 which are adjacent and equidistantly distributed are arranged on the side face, facing the high-temperature resistant layer 1, of the dust facing layer 2, and the first grooves 21 are uniformly distributed along the length direction of the dust facing layer 2.

The high temperature resistant layer 1 is made of melamine fiber, a plurality of adjacent second grooves 11 which are distributed at equal intervals are arranged on the side surface of the high temperature resistant layer 1 facing the dust receiving layer 2, the first grooves 21 correspond to the second grooves 11 one by one, and the notches of the first grooves 21 face the notches of the corresponding second grooves 11.

Two-layer adhesion layer 5 forms through meeting the corresponding side surface of dust layer 2 and high temperature resistant layer 1 with the coating respectively, all is equipped with the arch with first recess 21, second recess 11 looks adaptation on the both sides side of antistatic backing 6, and the arch of antistatic backing 6 passes adhesion layer 5 and is in first recess 21 or the second recess 11 of corresponding side. One adhesion layer 5 is adhered to the dust facing layer 2 and the anti-static layer 6, and the other adhesion layer 5 is adhered to the anti-static layer 6 and the high temperature resistant layer 1.

The antistatic layer 6 is formed by interweaving polyester yarns and conductive yarns. The adsorption layer 3 is made of activated carbon cloth, and activated carbon particles are uniformly distributed in the adsorption layer 3. The substrate layer 4 is formed by three-dimensional needling of polyimide fibers.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. A novel filter felt is characterized in that: include high temperature resistant layer (1), adsorbed layer (3) and stratum basale (4) in proper order, high temperature resistant layer (1) is made for melamine fibre, adsorbed layer (3) are made for activated carbon cloth, stratum basale (4) are that polyimide fiber forms through three-dimensional acupuncture.

2. The novel filter felt according to claim 1, wherein: the dust collection layer is characterized by further comprising a dust receiving layer (2), the dust receiving layer (2) is located on one side, away from the adsorption layer (3), of the high temperature resistant layer (1), and the dust receiving layer (2) is a polytetrafluoroethylene layer.

3. The novel filter felt according to claim 2, wherein: an adhesion layer (5) is arranged between the dust facing layer (2) and the high temperature resistant layer (1).

4. The novel filter felt according to claim 3, wherein: the adhesion layer (5) is a phenolic resin glue layer.

5. The novel filter felt according to claim 3, wherein: an anti-static layer (6) is arranged between the dust facing layer (2) and the high temperature resistant layer (1).

6. The novel filter felt according to claim 5, wherein: be equipped with first recess (21) that a plurality of adjacent equidistance distribute on meeting the side of dirt layer (2) towards high temperature resistant layer (1), be equipped with second recess (11) that a plurality of adjacent equidistance distribute on meeting the side of dirt layer (2) towards high temperature resistant layer (1), antistatic backing (6) are filled in first recess (21) and second recess (11).

7. The novel filter felt according to claim 5, wherein: the anti-static layer (6) is formed by interweaving polyester yarns and conductive yarns.